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Cover Sheet Feeding Apparatus

Publishing Venue

IBM

Related People

Hunt, RE: AUTHOR

Abstract

In document-feeding devices the feeding device often scores or marks the paper which is being fed. This is particularly true in the type of device where the feeding device moves in a scrubbing motion relative to the paper or envelope which is being fed.

Country

United States

Language

English (United States)

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Cover Sheet Feeding Apparatus

In document-feeding devices the feeding device often scores or marks the
paper which is being fed. This is particularly true in the type of device where the
feeding device moves in a scrubbing motion relative to the paper or envelope
which is being fed.

Shown is a feeding device which moves relative to the paper which it is to
feed such that potentially scoring or marking of the paper would result. A
technique is shown which alleviates this marking problem.

The top cover sheet 1 is restrained by a fixed clamp 2. The separator wheel
assembly 3, which rotates in the direction of the arrow (counterclockwise),
provides a shingling force. Since the clamp 2 is a finite distance from the driving
wheel 3, the cover sheet will stretch and feed slightly to the right, as shown in the
drawing. The movement to the right will also be imparted to the sheets below
because of the shingling phenomenon.

The wheel 3 is designed with rollers 4 to allow a period, during rotation of the
wheel, when no roller is driving the paper. During this time, the cover sheet, due
to its elasticity, snaps back to its original position. There are no external, vertical
loads on the cover sheet during the snap back so the frictional forces between
the cover sheet and the sheet below it are not high enough to pull the lower
sheet back. This cycle is repeated each time a roller 4 comes around and the
sheets below the cover sheet are fed into a utilization unit.